Ex p control unit
Motor purge controller
Electrical connections
Rev. 0
01-37A2-7D0003_Operating instructions_MPC_20210923_0_en.docx
Page 45 of 96
6.2.2.5
Terminal row ”X15”
ATTENTION
CAUTION WHEN CONNECTING EXTERNAL SENSORS TO THE EX P CONTROL
UNIT.
When connecting external sensors to the Ex p control unit, please ensure
functional safety!
The external sensors must meet the requirements of SIL 2.
The "optional sensor" function is only available with the Ex p control
unit APEX.
As standard, two functions can be carried out on the optional current input.
On the one hand, an additional pressure sensor may be connected, or flushing
can be triggered without deactivation by means of a current signal.
Pressure sensor for additional pressure monitoring. The function is set via the
WEB interface.
Pressure or gas sensors with a 4… 20 mA output may
be connected to sensor input OS 1 [Ex ib].
The processing of the signal takes place depending on
the setting of the respective functions.
Terminal
Connection
Function
1
GND
Ground connection
2
OS1 Out
Sensor output
3
OS1 IN
Sensor output
4
24V OS1
Power supply sensor 1
